Jar-opener.



S. A. ROSEN. JAR OPENER. APPLICATION FILED JUNE 28, ms.

Patented Dec. 14, 1915.

Jzvenfov 543mm flyiflfovneys- Urn s'rarns irrnnr amen.

SIXTEN A. ROSEN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO HERMAN L. DOW, 0F WORCESTER, MASSACHUSETTS.

JAR-OPENER.

Specification of Letters Patent.

Patented Dec. ML, 1915.

Application filed June 28, 1913. Serial No. 776,246.

To all whom it may concern:

Be it known that 1, SIXTEN A. RosEN, a citizen of the United States, residing at lVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Jar-Opener, of which the following is a specification.

This invention relates to a jar opener for the purpose of freeing the covers of certain kinds of preserving jars from the packing rings which are ordinarily used under them. It is well understood that these covers sometimes stick and it is necessary to break them or the jars themselves in order to open the same.

The principal objects of this invention are to provide an extremelysimple and inexpensive device having two opposite aws both arranged to engage under the cover for the purpose of freeing it without danger of breaking the cover or jar, and more specifically to provide one consisting of only two parts.

Reference is to be had to the accompanying drawings in which- Figure 1 is a plan of a Lightening jar showing a preferred embodiment of this invention operatively applied thereto: Fig. 2 is a side view of the same; and Fig. 3 is a side view of the jar opener removed from the jar. Fig. 4 is a view similar to Fig. 1 showing the device applied to a jar having a larger top or cover.

The device is shown in exceedingly simple form in which it consists of only two parts a and b. a is a curved arm ofsuch form that it will surround the top of a Lightening jar and be spaced from it all around. It is provided at its free end with a flat offset a which is beveled off to form a horizontal wedge extending well in from the body of the arm. This is for engaging under the cover of the jar. On the other end of the arm is a pivot pin 0 and on this is pivoted a jar handle 6. This handle is pro vided with a substantially straight arm extending beyond the pivot and forming a continuation of the handle. At the end this arm has an integral jaw Z) which is beveled off to provide a horizontal edge for entering under the jar cover.

The operation of the device will be obvious from a consideration of Fig. 1. The two wedge-shaped jaws are placed so as to engage just under the edge of the cover and then the arm is turned to force them ,together. As the jaws are diametrically op poslte and in the same plane they tend to pry up the cover equally on both sides, but 1f one side sticks harder than the other, that serves as a point of resistance toward which the other jaw is forced with all the power that is applied to the tool. In this way a suliicient leverage is secured to open a jar which is most effectively sealed or cemented to its cover.

The parts are extremely simple and ineX- penslve and when not in use the handle can be folded over on the arm a, so that the device takes up very little room. A feature of importance in my device is its capacity for use on jars of various sizes. To give it this capacity, I make the arm or yoke a in the form of asemi-circle which begins at the point a and ends at the point a and from this point a the arm extends approximately tangentially to the semi-circular part of the arm. By thus arranging the fulcrum-end of the arm or yoke tangentially, it will be seen that the fulcrum (0) 1S brought to a point a considerable distance from the jar top, whereby the wedge-carrymg end of the lever may have considerable length.

In Fig. 1 I show the device in use on a jar having a comparatively small top, and in Fig. 4.- 1 show the device as it is used on a top of much larger size. In using the device with small jar tops, it will be seen that the tool does not touch the jar except where the two wedges a and b engage under the flange of the cover to be removed, but when the device is employed on larger tops, the seml-circular part of the arm will lie against the top of the jar approximately the full length of the semi-circular part. But in all cases it will be seen that the direction of application of force will be circumferential to the ar, so that when the cover is stuck with unusual tightness, the force exerted to shove the wedges in will also tend to move the tool around the jar top and thus cause a strip ping action, which will obviously tend to gradually pry the cover off with a minimum liability of breakage of the top 'or injury to the packing.

A further advantage of my construction is that in practically all cases the two wedges will engage the jar cover at a point at one side of the center thereof, so that there will be a tendency in lifting the cover to slightly tilt it, whereby a tightly stuck top may be removed with greater ease than where a direct upward push or pull is applied to it.

Although I have illustrated and described only a single embodiment of the invention, I am aware of the fact that many modifications can be made therein by skilled mechanics Without departing from the scope of the invention as expressed in the claim, therefore, I do not wish to be limited to all the details of construction, but

\Vhat I do claim is A jar opener consisting of a semi-circular bar having an inturned wedge formed at one end and having its other end extended tangentially, and a lever pivoted to the end of the tangential part of the bar, the axis of the pivot being at right angles tothe plane of the bar, said lever being formed into a handle at its outer end and formed into an inturned wedge member at its inner end, said two wedge devices being .in approximately the same plane with each other and the bar.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

SIXTEN A. ROSEN. Witnesses:

ALBERT E. FAY, FREDERIo A. MOONEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

